Research On Multi-vehicle Real-time Collaborative Charging Scheduling In Wireless Rechargeable Sensor Networks

Recently,thanks to the rapid development of wireless power transmission technology,wireless sensors are much close to our daily life.And the researches about wireless sensor networks(WSNs)get more attention by researchers and research groups.As known,WSNs are constituted by plenty of sensor nodes,which decide that the bottleneck of WSNs is the limitation of energy.Therefore,researches about this domain are focus on the control and replenishment of energy.Combining with wireless power transmission technology,the concept of wireless rechargeable sensor networks(WRSNs)is proposed and overcomes the problem of energy to a great extent by using the wireless mobile chargers(WMCs)to replenish the nodes and prolonging working time of nodes.Under certain network structures,an outstanding scheduling scheme becomes the core of research in WRSNs.Furthermore,the evaluation basis for scheduling scheme is the performance of networks.In the proposed scheme,it synthetically considers the temporal factor,spatial factor and the structure of link.It shows an evaluation standard for sensor and gets the service priority queue.In the terms of multi-vehicle,it contains the thought of clustering algorithm and assign the service area and mechanisms of communication and cooperation for each vehicle which is regarded as a WMC.And WMCs will charge the nodes according to the request from nodes in the area.Then,there are plenty of simulations to verify the feasibility and superiority.In simulations,it is compared with typical algorithm Pushwait and Hierarchical.In the same network setting,the conclusion can be reached after the comparison of the performance.And the result shows that the proposed algorithm has better performance on survival rate,successful rate,throughput and other properties.And it verifies the feasibility and superiority as well.